feat(bridge): 동적 채널 관리 - gravity-{프로젝트명} 채널 자동 생성/아카이브

.env.example

@@ -1,11 +1,14 @@
 # Discord Bot Token
 DISCORD_TOKEN=your_discord_bot_token_here
 
-# Discord Channel ID (메인 채널 — 세션 스레드가 여기에 생성됨)
-DISCORD_CHANNEL_ID=
+# Discord Guild (서버) ID — 봇이 채널을 생성할 서버
+DISCORD_GUILD_ID=
 
 # Antigravity Brain Path
 BRAIN_PATH=C:\Users\Certes\.gemini\antigravity\brain
 
+# 세션 활성 판단: 마지막 파일 변경으로부터 이 시간(초) 이내면 활성
+ACTIVE_TIMEOUT_SECONDS=300
+
 # Watcher Settings
 DEBOUNCE_SECONDS=2

bot.py

@@ -1,16 +1,22 @@
 """Discord bot — relays Antigravity brain events to Discord channels.
 
-Creates per-session text channels in Discord when new Antigravity sessions are
-detected, relays task progress and artifact content as text messages and embeds.
+Dynamic channel management:
+- Scans brain/ for active sessions on startup
+- Creates `gravity-{project_name}` channels per active session
+- Archives channels when sessions become inactive
+- Project name extracted from artifact content or short conversation ID
 """
 
 import asyncio
+import json
 import logging
+import re
+import time
 from datetime import datetime, timezone
 from pathlib import Path
 
 import discord
-from discord.ext import commands
+from discord.ext import commands, tasks
 
 from config import Config
 from parser import (
@@ -23,6 +29,84 @@ from watcher import BrainEvent, EventType
 logger = logging.getLogger(__name__)
 
 
+def detect_project_name(conv_dir: Path) -> str:
+    """Extract a human-readable project name from conversation artifacts.
+
+    Strategy:
+    1. Check task.md first line for a title (# Title)
+    2. Check implementation_plan.md first line
+    3. Check any .metadata.json for summary keywords
+    4. Fallback to short conversation ID
+    """
+    short_id = conv_dir.name[:8]
+
+    # Try task.md title
+    task_file = conv_dir / "task.md"
+    if task_file.exists():
+        try:
+            first_lines = task_file.read_text(encoding="utf-8").splitlines()[:5]
+            for line in first_lines:
+                match = re.match(r'^#\s+(.+?)[\s—\-]+', line)
+                if match:
+                    name = match.group(1).strip()
+                    # Sanitize for Discord channel name
+                    name = re.sub(r'[^a-zA-Z0-9가-힣\s\-]', '', name)
+                    name = re.sub(r'\s+', '-', name).lower()[:30]
+                    if name:
+                        return name
+        except (OSError, UnicodeDecodeError):
+            pass
+
+    # Try implementation_plan.md title
+    plan_file = conv_dir / "implementation_plan.md"
+    if plan_file.exists():
+        try:
+            first_lines = plan_file.read_text(encoding="utf-8").splitlines()[:5]
+            for line in first_lines:
+                match = re.match(r'^#\s+(.+?)[\s—\-]+', line)
+                if match:
+                    name = match.group(1).strip()
+                    name = re.sub(r'[^a-zA-Z0-9가-힣\s\-]', '', name)
+                    name = re.sub(r'\s+', '-', name).lower()[:30]
+                    if name:
+                        return name
+        except (OSError, UnicodeDecodeError):
+            pass
+
+    # Try metadata summary
+    for meta_file in conv_dir.glob("*.metadata.json"):
+        try:
+            meta = json.loads(meta_file.read_text(encoding="utf-8"))
+            summary = meta.get("summary", "")
+            # Extract first meaningful noun/phrase
+            words = summary.split()[:3]
+            if words:
+                name = "-".join(words).lower()
+                name = re.sub(r'[^a-z0-9가-힣\-]', '', name)[:30]
+                if name:
+                    return name
+        except (OSError, json.JSONDecodeError):
+            pass
+
+    return short_id
+
+
+def is_session_active(conv_dir: Path) -> bool:
+    """Check if a session is active based on file modification time."""
+    now = time.time()
+    threshold = Config.ACTIVE_TIMEOUT_SECONDS
+
+    for f in conv_dir.iterdir():
+        if f.is_file():
+            try:
+                mtime = f.stat().st_mtime
+                if now - mtime < threshold:
+                    return True
+            except OSError:
+                continue
+    return False
+
+
 class GravityBot(commands.Bot):
     """Discord bot for Antigravity session monitoring."""
 
@@ -33,59 +117,119 @@ class GravityBot(commands.Bot):
         super().__init__(command_prefix="!", intents=intents)
 
         self.event_queue = event_queue
-        # conversation_id -> channel_id
-        self.session_channels: dict[str, int] = {}
+        # conversation_id -> channel object
+        self.session_channels: dict[str, discord.TextChannel] = {}
         # conversation_id -> status message id (to edit in-place)
         self.session_status_messages: dict[str, int] = {}
-        # Main channel for creating session threads
-        self.main_channel: discord.TextChannel | None = None
+        # conversation_id -> project name
+        self.session_names: dict[str, str] = {}
         # Category for session channels
         self.session_category: discord.CategoryChannel | None = None
+        # Guild reference
+        self.guild: discord.Guild | None = None
 
     async def setup_hook(self):
         """Called after login, before processing events."""
         self.loop.create_task(self._process_events())
+        self.session_cleanup_loop.start()
         logger.info("Bot setup complete, event processor started")
 
     async def on_ready(self):
         """Called when bot is ready."""
         logger.info(f"Bot connected as {self.user} (ID: {self.user.id})")
 
-        # Find or create main channel
-        if Config.DISCORD_CHANNEL_ID:
-            self.main_channel = self.get_channel(Config.DISCORD_CHANNEL_ID)
-            if self.main_channel:
-                logger.info(f"Main channel: #{self.main_channel.name}")
+        # Get guild
+        self.guild = self.get_guild(Config.DISCORD_GUILD_ID)
+        if not self.guild:
+            logger.error(f"Guild {Config.DISCORD_GUILD_ID} not found!")
+            return
 
-                # Find or create session category
-                guild = self.main_channel.guild
-                category_name = "Antigravity Sessions"
-                self.session_category = discord.utils.get(
-                    guild.categories, name=category_name
-                )
-                if not self.session_category:
-                    try:
-                        self.session_category = await guild.create_category(category_name)
-                        logger.info(f"Created category: {category_name}")
-                    except discord.errors.Forbidden:
-                        logger.warning("No permission to create category, using main channel")
+        # Find or create session category
+        category_name = "Antigravity Sessions"
+        self.session_category = discord.utils.get(
+            self.guild.categories, name=category_name
+        )
+        if not self.session_category:
+            try:
+                self.session_category = await self.guild.create_category(category_name)
+                logger.info(f"Created category: {category_name}")
+            except discord.errors.Forbidden:
+                logger.error("No permission to create category!")
+                return
 
-                # Send startup message
-                embed = discord.Embed(
-                    title="🛰️ Gravity Control 연결됨",
-                    description="Antigravity 세션 모니터링을 시작합니다.",
-                    color=discord.Color.green(),
-                    timestamp=datetime.now(timezone.utc),
-                )
-                embed.add_field(
-                    name="Brain Path",
-                    value=f"`{Config.BRAIN_PATH}`",
-                    inline=False,
-                )
-                await self.main_channel.send(embed=embed)
+        # Sync existing active sessions
+        await self._sync_active_sessions()
+
+    async def _sync_active_sessions(self):
+        """Scan brain/ and create channels for currently active sessions."""
+        brain_path = Config.BRAIN_PATH
+        if not brain_path.exists():
+            return
+
+        active_count = 0
+        for entry in brain_path.iterdir():
+            if entry.is_dir() and self._is_conversation_id(entry.name):
+                if is_session_active(entry):
+                    project_name = detect_project_name(entry)
+                    await self._ensure_channel(entry.name, project_name)
+                    active_count += 1
+
+        logger.info(f"Synced {active_count} active sessions on startup")
+
+    def _is_conversation_id(self, name: str) -> bool:
+        """Check if directory name looks like a UUID."""
+        parts = name.split("-")
+        return len(parts) == 5 and all(len(p) >= 4 for p in parts)
+
+    async def _ensure_channel(
+        self, conversation_id: str, project_name: str
+    ) -> discord.TextChannel:
+        """Get or create a Discord channel for a session."""
+        # Check if channel already exists
+        if conversation_id in self.session_channels:
+            return self.session_channels[conversation_id]
+
+        channel_name = f"{Config.CHANNEL_PREFIX}-{project_name}"
+
+        # Check if channel already exists in category (from previous run)
+        if self.session_category:
+            for ch in self.session_category.text_channels:
+                if ch.topic and conversation_id in ch.topic:
+                    self.session_channels[conversation_id] = ch
+                    self.session_names[conversation_id] = project_name
+                    logger.info(f"Reconnected to existing channel #{ch.name}")
+                    return ch
+
+        # Create new channel
+        try:
+            channel = await self.guild.create_text_channel(
+                name=channel_name,
+                category=self.session_category,
+                topic=f"Antigravity Session: {conversation_id}",
+            )
+            self.session_channels[conversation_id] = channel
+            self.session_names[conversation_id] = project_name
+            logger.info(f"Created channel #{channel_name}")
+
+            # Welcome embed
+            embed = discord.Embed(
+                title=f"🚀 {project_name}",
+                description=(
+                    f"Antigravity 세션 연결됨\n"
+                    f"Session: `{conversation_id}`"
+                ),
+                color=discord.Color.blue(),
+                timestamp=datetime.now(timezone.utc),
+            )
+            await channel.send(embed=embed)
+            return channel
+
+        except discord.errors.Forbidden:
+            logger.error(f"No permission to create channel: {channel_name}")
+            return None
 
     async def _process_events(self):
-        """Main event processing loop — consumes brain events."""
+        """Main event processing loop."""
         await self.wait_until_ready()
 
         while not self.is_closed():
@@ -100,66 +244,23 @@ class GravityBot(commands.Bot):
                 logger.error(f"Error processing event: {e}", exc_info=True)
 
     async def _handle_event(self, event: BrainEvent):
-        """Route brain events to appropriate handlers."""
+        """Route brain events to handlers."""
         if event.event_type == EventType.SESSION_START:
-            await self._handle_session_start(event)
+            conv_dir = Config.BRAIN_PATH / event.conversation_id
+            project_name = detect_project_name(conv_dir)
+            await self._ensure_channel(event.conversation_id, project_name)
+
         elif event.event_type in (EventType.FILE_CREATED, EventType.FILE_CHANGED):
-            await self._handle_file_event(event)
+            # Ensure channel exists
+            conv_dir = Config.BRAIN_PATH / event.conversation_id
+            project_name = detect_project_name(conv_dir)
+            channel = await self._ensure_channel(event.conversation_id, project_name)
 
-    async def _handle_session_start(self, event: BrainEvent):
-        """Create a new Discord channel for the session."""
-        conv_id = event.conversation_id
-        short_id = conv_id[:8]
-
-        if self.session_category:
-            guild = self.session_category.guild
-            channel_name = f"session-{short_id}"
-
-            try:
-                channel = await guild.create_text_channel(
-                    name=channel_name,
-                    category=self.session_category,
-                    topic=f"Antigravity Session: {conv_id}",
-                )
-                self.session_channels[conv_id] = channel.id
-                logger.info(f"Created channel #{channel_name} for session {conv_id}")
-
-                # Send welcome embed
-                embed = discord.Embed(
-                    title=f"🚀 새 Antigravity 세션",
-                    description=f"Session ID: `{conv_id}`",
-                    color=discord.Color.blue(),
-                    timestamp=datetime.now(timezone.utc),
-                )
-                await channel.send(embed=embed)
-
-                # Notify main channel
-                if self.main_channel:
-                    await self.main_channel.send(
-                        f"📡 새 세션 시작: {channel.mention} (`{short_id}`)"
-                    )
-            except discord.errors.Forbidden:
-                logger.warning(f"No permission to create channel for {conv_id}")
-                # Fall back to main channel
-                self.session_channels[conv_id] = Config.DISCORD_CHANNEL_ID
-        else:
-            # No category — use main channel
-            self.session_channels[conv_id] = Config.DISCORD_CHANNEL_ID
-            if self.main_channel:
-                await self.main_channel.send(
-                    f"📡 새 세션 감지: `{short_id}`"
-                )
-
-    async def _handle_file_event(self, event: BrainEvent):
-        """Handle file creation/modification events."""
-        channel = await self._get_session_channel(event.conversation_id)
-        if not channel:
-            return
-
-        if event.file_name == "task.md":
-            await self._send_task_update(channel, event)
-        else:
-            await self._send_artifact_content(channel, event)
+            if channel:
+                if event.file_name == "task.md":
+                    await self._send_task_update(channel, event)
+                else:
+                    await self._send_artifact_content(channel, event)
 
     async def _send_task_update(
         self, channel: discord.TextChannel, event: BrainEvent
@@ -175,9 +276,10 @@ class GravityBot(commands.Bot):
                   else discord.Color.greyple(),
             timestamp=datetime.now(timezone.utc),
         )
-        embed.set_footer(text=f"Session: {event.conversation_id[:8]}")
+        short_id = event.conversation_id[:8]
+        embed.set_footer(text=f"Session: {short_id}")
 
-        # Edit existing status message or send new one
+        # Edit existing or send new
         msg_id = self.session_status_messages.get(event.conversation_id)
         if msg_id:
             try:
@@ -194,7 +296,6 @@ class GravityBot(commands.Bot):
         self, channel: discord.TextChannel, event: BrainEvent
     ):
         """Send artifact file content as Discord text messages."""
-        # File type label
         labels = {
             "implementation_plan.md": "📐 구현 계획",
             "walkthrough.md": "📝 작업 결과 요약",
@@ -202,62 +303,47 @@ class GravityBot(commands.Bot):
         label = labels.get(event.file_name, f"📄 {event.file_name}")
         event_label = "생성" if event.event_type == EventType.FILE_CREATED else "업데이트"
 
-        # Header message
         await channel.send(f"**{label} ({event_label}됨)**")
 
-        # Convert and send content
         chunks = md_to_discord_text(event.content)
         for chunk in chunks:
             if chunk.strip():
                 await channel.send(chunk)
-                # Small delay to avoid rate limits
                 await asyncio.sleep(0.5)
 
-    async def _get_session_channel(
-        self, conversation_id: str
-    ) -> discord.TextChannel | None:
-        """Get the Discord channel for a session."""
-        channel_id = self.session_channels.get(conversation_id)
+    @tasks.loop(minutes=5)
+    async def session_cleanup_loop(self):
+        """Periodically check for inactive sessions and archive their channels."""
+        if not self.guild:
+            return
 
-        # If no channel mapped, check if this is a known session and create one
-        if not channel_id:
-            # Auto-create for sessions that started before the bot
-            await self._handle_session_start(BrainEvent(
-                event_type=EventType.SESSION_START,
-                conversation_id=conversation_id,
-            ))
-            channel_id = self.session_channels.get(conversation_id)
+        to_remove = []
+        for conv_id, channel in self.session_channels.items():
+            conv_dir = Config.BRAIN_PATH / conv_id
+            if not conv_dir.exists() or not is_session_active(conv_dir):
+                to_remove.append(conv_id)
+
+        for conv_id in to_remove:
+            channel = self.session_channels.pop(conv_id, None)
+            self.session_status_messages.pop(conv_id, None)
+            name = self.session_names.pop(conv_id, conv_id[:8])
 
-        if channel_id:
-            channel = self.get_channel(channel_id)
             if channel:
-                return channel
-
-        return self.main_channel
-
-    async def cleanup_session(self, conversation_id: str):
-        """Clean up when an Antigravity session ends."""
-        channel_id = self.session_channels.pop(conversation_id, None)
-        self.session_status_messages.pop(conversation_id, None)
-
-        if channel_id:
-            channel = self.get_channel(channel_id)
-            if channel and channel.id != Config.DISCORD_CHANNEL_ID:
                 try:
-                    # Send closing message before archiving
                     embed = discord.Embed(
-                        title="🔴 세션 종료",
-                        description=f"Session `{conversation_id[:8]}` 이 종료되었습니다.",
+                        title="🔴 세션 비활성",
+                        description=f"`{name}` 세션이 비활성 상태입니다.",
                         color=discord.Color.red(),
                         timestamp=datetime.now(timezone.utc),
                     )
                     await channel.send(embed=embed)
-
-                    # Archive channel (move to bottom, read-only)
-                    await channel.edit(
-                        name=f"closed-{conversation_id[:8]}",
-                        sync_permissions=True,
-                    )
-                    logger.info(f"Archived channel for session {conversation_id[:8]}")
+                    await channel.edit(name=f"closed-{name[:20]}")
+                    logger.info(f"Archived channel for {conv_id[:8]}")
                 except discord.errors.Forbidden:
-                    logger.warning(f"No permission to archive channel for {conversation_id}")
+                    logger.warning(f"No permission to archive {conv_id[:8]}")
+                except Exception as e:
+                    logger.warning(f"Failed to archive {conv_id[:8]}: {e}")
+
+    @session_cleanup_loop.before_loop
+    async def before_cleanup(self):
+        await self.wait_until_ready()

config.py

@@ -13,7 +13,7 @@ class Config:
 
     # Discord
     DISCORD_TOKEN: str = os.getenv("DISCORD_TOKEN", "")
-    DISCORD_CHANNEL_ID: int = int(os.getenv("DISCORD_CHANNEL_ID", "0"))
+    DISCORD_GUILD_ID: int = int(os.getenv("DISCORD_GUILD_ID") or "0")
 
     # Antigravity Brain path
     BRAIN_PATH: Path = Path(os.getenv(
@@ -21,6 +21,9 @@ class Config:
         os.path.expanduser("~/.gemini/antigravity/brain")
     ))
 
+    # Session activity detection
+    ACTIVE_TIMEOUT_SECONDS: int = int(os.getenv("ACTIVE_TIMEOUT_SECONDS", "300"))
+
     # Watcher settings
     DEBOUNCE_SECONDS: float = float(os.getenv("DEBOUNCE_SECONDS", "2"))
 
@@ -35,14 +38,17 @@ class Config:
     DISCORD_MSG_LIMIT: int = 2000
     DISCORD_EMBED_DESC_LIMIT: int = 4096
 
+    # Channel naming
+    CHANNEL_PREFIX: str = "gravity"
+
     @classmethod
     def validate(cls) -> list[str]:
         """Return list of configuration errors."""
         errors = []
         if not cls.DISCORD_TOKEN:
             errors.append("DISCORD_TOKEN is not set")
-        if not cls.DISCORD_CHANNEL_ID:
-            errors.append("DISCORD_CHANNEL_ID is not set")
+        if not cls.DISCORD_GUILD_ID:
+            errors.append("DISCORD_GUILD_ID is not set")
         if not cls.BRAIN_PATH.exists():
             errors.append(f"BRAIN_PATH does not exist: {cls.BRAIN_PATH}")
         return errors